Most IRW item text carries no licence of its own: the response-data licence
does not extend to the instrument, and inclusion implies no licence to reuse
it. A minority of tables are different: their wording was released by its
source under an open licence (CC BY-SA 4.0, CC BY-NC 4.0, ...), and IRW
republishes it under that licence, with attribution and a note of its
changes. This function returns that record for one table, or NULL
when the wording carries no licence of its own.
Value
A one-row data frame with columns table, licence,
licence_url, attribution, changes and basis,
or NULL if the wording carries no licence of its own (or the record
could not be fetched, in which case a warning says so).
Details
The record is the IRW repository's itemtext/itemtext_licences.csv,
fetched once per session. irw_itemtext() prints the same line after
fetching a licensed table.
Examples
# \donttest{
irw_itemtext_licence("iowa_gambling_task")
#> table licence
#> 1 iowa_gambling_task CC BY-SA 4.0
#> licence_url
#> 1 https://creativecommons.org/licenses/by-sa/4.0/
#> attribution
#> 1 Steingroever, H., Fridberg, D. J., Horstmann, A., et al. (2015). Data from 617 healthy participants performing the Iowa Gambling Task: A "many labs" collaboration. Journal of Open Psychology Data, 3. https://doi.org/10.5334/jopd.ak
#> changes
#> 1 Reformatted by IRW to one row per item, keyed to IRW item codes.
#> basis
#> 1 Wording from the JOPD data paper and its OSF deposit, both CC BY-SA 4.0 (provenance batch_301).
# }